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High-efficiency non-noble metal water electrolysis catalytic material as well as preparation method and application thereof

A catalytic material, non-precious metal technology, applied in the field of high-efficiency non-precious metal electrolysis water catalytic materials, to achieve the effect of low production cost, stable structure, and favorable formation and exposure

Active Publication Date: 2021-07-02
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, how to meet the requirements of the stability and conductivity of the catalytic material in the reaction and ensure that MoS2 has abundant and stable edges under the condition of self-supporting is a very challenging preparation strategy.

Method used

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  • High-efficiency non-noble metal water electrolysis catalytic material as well as preparation method and application thereof
  • High-efficiency non-noble metal water electrolysis catalytic material as well as preparation method and application thereof
  • High-efficiency non-noble metal water electrolysis catalytic material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] 1. Cut a certain size of nickel foam (1*1cm, 300PPI, 3mm), put it in ultrapure water, acetone, hydrochloric acid (1M) and ultrapure water for ultrasonication, each ultrasonic time is 20min, and then place it in a vacuum oven Dry for 12 hours;

[0042]2. Dissolve 1.7mg of ammonium molybdate and 7mg of thiourea in 2mL of water, then add 50mg of silicon dioxide (100nm, 30wt.%) and 0.5mL of ethanol, stir and mix well, and then sonicate for 60min;

[0043] 3. Take the mixed solution in step (2) and drop-coat it directly on the nickel foam, so that the precursor is evenly loaded on the nickel foam. After baking for 3 hours under a 100W infrared lamp, place it in a vacuum dryer and dry it for 10 hours. The drying temperature is 60°C;

[0044] 4. Transfer the product obtained in step (3) to a tube furnace, and in an argon atmosphere, program the temperature to 400°C at a heating rate of 10°C / min, the mixed gas flow rate is 80mL / min, and then keep it for 240min;

[0045] 5. Mi...

Embodiment 2

[0048] 1. Cut a certain size of nickel foam (1*1cm, 300PPI, 3mm), put it in ultrapure water, acetone, hydrochloric acid (1M) and ultrapure water for ultrasonication, each ultrasonic time is 20min, and then place it in a vacuum oven Dry for 12 hours;

[0049] 2. Dissolve 13.3mg of sodium tungstate and 7mg of thiourea in 2mL of water, then add 50mg of silicon dioxide (100nm, 30wt.%) and 0.5mL of ethanol, stir and mix well, and then sonicate for 60min;

[0050] 3. Take the mixed solution in step (2) and drop-coat it directly on the nickel foam, so that the precursor is evenly loaded on the nickel foam. After baking for 3 hours under a 100W infrared lamp, place it in a vacuum dryer and dry it for 10 hours. The drying temperature is 60°C;

[0051] 4. Transfer the product obtained in step (3) to a tube furnace, and in an argon atmosphere, program the temperature to 400°C at a heating rate of 10°C / min, the mixed gas flow rate is 80mL / min, and then keep it for 240min;

[0052] 5. Mi...

Embodiment 3

[0055] 1. Cut a certain size of nickel foam (1*1cm, 300PPI, 3mm), put it in ultrapure water, acetone, hydrochloric acid (1M) and ultrapure water for ultrasonication, each ultrasonic time is 20min, and then place it in a vacuum oven Dry for 12 hours;

[0056] 2. Dissolve 23.7mg of cobalt nitrate and 7mg of thiourea in 2mL of water, then add 50mg of silicon dioxide (100nm, 30wt.%) and 1mL of ethanol, stir and mix well, and then sonicate for 60min;

[0057] 3. Take the mixed solution in step (2) and drop-coat it directly on the nickel foam, so that the precursor is evenly loaded on the nickel foam. After baking for 3 hours under a 100W infrared lamp, dry for 10 hours at a drying temperature of 60 ° C;

[0058] 4. Transfer the product obtained in step (3) to a tube furnace, and in an argon atmosphere, program the temperature up to 400°C at a heating rate of 10°C / min, with a mixed gas flow rate of 80ml / min, and then keep it for 240min;

[0059] 5. Mix 25mL of hydrofluoric acid, 25...

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Abstract

The invention provides a high-efficiency non-noble metal water electrolysis catalytic material as well as a preparation method and application thereof, and mainly solves the problems that the price of a current commercial platinum-based catalyst is high, and the current catalyst can only realize lower current density and is poor in stability under high current density under a working condition. Metal with excellent conductivity is selected as a substrate, and the three-dimensional honeycomb-shaped porous sulfide grows on the surface of the substrate, so that an efficient integral electrode catalyst is formed and used for water electrolysis. The catalyst can simultaneously realize high-efficiency hydrogen evolution and oxygen evolution through water electrolysis, still keeps ultrahigh stability under the condition of high current density, and has good industrial application prospects and commercial values. The preparation method of the catalyst provided by the invention is a universal method for preparing an efficient water electrolysis catalytic material, and has the characteristics of simplicity, easiness in operation, high commercial application value of the prepared water electrolysis catalytic material and the like.

Description

technical field [0001] The invention belongs to the technical field of nanometer material preparation, and in particular relates to a high-efficiency non-noble metal electrolytic water catalytic material. Background technique [0002] Hydrogen is an important clean energy carrier, with the advantages of non-toxic, non-polluting, high calorific value, etc., and is considered as a new energy carrier that can replace fossil energy. Among them, electrolysis of water is widely concerned as a method for the clean preparation of high-purity hydrogen. The water electrolysis reaction includes two half-reactions, the cathodic hydrogen evolution reaction (HER) and the anode oxygen evolution reaction (OER). At present, the hydrogen evolution reaction mainly uses expensive commercial platinum-based catalysts, while the oxygen evolution reaction also mainly uses expensive IrO 2 and RuO 2 and other noble metal oxide catalysts. With the rise of graphene materials, other two-dimensional m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/051B01J35/00B01J35/04C25B1/04C25B11/052C25B11/091
CPCB01J27/0515C25B1/04B01J35/33B01J35/56Y02E60/36
Inventor 邓德会郑智龙胡景庭
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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